android - 电子邮件中的附件

Question

我正在开发一个需要向某人发送电子邮件的应用程序。除了附件，一切正常。这是一段代码

 emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse(  "file://"+Environment.getExternalStorageDirectory()+""+attach));

附件是我在手机里浏览得到的文件。 但附件未发送请帮助。

谢谢

Answer 1

根据我的博文找到here :

Creating a mail on Android which the user may send with the app of his choice is widely spread on the net. But it isn't how you attach a file which will be send by googlemail.

The problem here is that the gmail app only want to send files which are located on the sdcard

Intent mail = new Intent(android.content.Intent.ACTION_SEND);
mail.setType("application/octet-stream");
mail.putExtra(android.content.Intent.EXTRA_EMAIL, new String[] {"my@mail.com"});
mail.putExtra(android.content.Intent.EXTRA_SUBJECT, "Subject");
mail.putExtra(android.content.Intent.EXTRA_TEXT, "Message");
mail.putExtra(android.content.Intent.EXTRA_STREAM, Uri.parse("file://" + Environment.getExternalStorageDirectory().getAbsolutePath() + "/file.txt"));
PrefAct.startActivity(Intent.createChooser(mail, "Send mail via..."));

As said gmail will refuse your attachment when the user sends the mail when the file isn't located on the ExternalStorage.